Pneumatic railway-gate



R. DE SIM ONE.

PNEUMATIC RAILWAY GATE.

APPLICATION FILED SEPT. 27. 1919.

7 1 388,101 I Patented Aug. 16, 1921.

3 SHEETS-SHEET l.

H. DE SIMONE.

PNEUMATIC RAILWAY GATE.

APPLICATION FILED SEPT. 27. I919.

1,388, 1 O 1 Patented Aug. 16, 1921.

3 SHEETS-SHEET 2.

5/5 11,11, 1.! u J U irLlLJ-uumuuuuu' H. DE SIMONE. PNEUMATIC RAILWAY GATE.

APPLICATION FILED SEPTJZTI IQW- 1,388,101. Patented Aug. 16,1921.

3 SHEETS-SHEET 3.

- UNITED STATES PA EN'r ROSS DE SIMONE, or HILTON, NEw YonK.

T 0 aZZwhOm it may concern:

Be it known that I, Ross D SIMONE, a"

citizenof the, United States, residing at Hilton, in the county of Monroe and State of New York, have invented new and useful Improvements in Pneumatic Railway- Gates, of which the following is a specification. v

The present invention relates to automatic railway gates. p

In carrying out my invention it is my purpose to produce a gate for-railway crossings which shall be automatically operated by suitable mechanism actuated by a train approaching the crossing for bringing the gate to obstructing position, while weighted means automatically return the gate to actuation and sure in operation. 1

unobstructing position after the train has passed the crossing.

It is also my purpose to produce a device of this character which shall be of an,

extremely simple-construction, positive in Other; objectsv and advantages Wlll presentthemselves'as theinatufe of the invention is better understood, referencebeing which:

hadv toithe accompanying drawings, in

Figure 1 is a plan view of a railway crossing provided with gates-operated in accordance' with this invention, said gates being in obstructing closed position.

Fig. 2 is a side elevation of the same.

Fig. 3 is an enlarged sectional view on the line 33 of Fig. 1.

Fig. 4 is an enlarged vertical sectional 7 view on the line 4-4 of Fig. 1.

Fig. 5 is a horizontal sectional view of the semaphore operating cylinder.

Referring to the drawings in detail, 10 represents a railway track, the crossing of which being protected by gates 11 and 12 respectively. These gates are pivotally secured upon suitable supports 13 which, in the present instance, are in the nature of casings. The gates have their lower ends weighted in the usual manner whereby the same are normally retained in a vertical po sition, suitable stopmeans 14 being provided for contacting with the gates for holding the same in such vertical or non-ob structingposition. 4

One pair of the gates 11 and 12 is dis-.

posed to the opposite sides of the tracks at r PNEUMATIC RAILWAY-GATE.

Specification of Letters latent. Patented A 10, 16, 1921', Application filed September 27, 1919. Serial No. 326,967. I

at a suitable distance from each side of the crossing are the spaced cylinders or body members '15 ofair compressing pumps. Only one series of such pumps has been illustrated by the drawings, but it is to beunderstood that the construction and operation of leach series is similar. The cylinders are arranged one dlrectly forward of the other, and each has therein a plunger 16 which is influenced by a spring 18 to move the same toward the top or head of the cyldiuctingpipe 20 which leads-to a reservoir 21. On the train (not shown) there 'is a suitable depending elementin the path of contact with the heads 19, and such }contact will successively depress the plungers in the respect ve casings, compressing air there in and forcing such compressed air through Y the pipe 20, and into 7, the reservoir 21.

From the reservoir thereisa pipe 22 that communicates with a cylinder '23 in which there is arranged a piston-24 that;

has its stem .24 projecting through the sleeve and has a pin 24 passing through ,a slot 25' in'the end of. an arm or lever 25. The leveris keyed or otherwise secured to'a shaft on which there is a signal or semaphore arm 25'.

Also leading from the reservoir 21 is an 7 air conducting pipe 26 that. connects directly with the cylinder 26 in one of the casings '13 and with a branch pipe connecting with a similar cylinder 26 in the oppoe site casing 13 to which the second gate 11 is pivotally connected. Each of the cylinders 26' is provided with a suitable bleed port, and in each of the said cylinders there is a piston 27 that has its stem 28 projecting through a packing box in the head of the cylinder. Each piston stem 28 has loosely connected to the outer arm thereof a link 28 that in turn is connected to the free end of a crank 29 that is keyed or otherwise secured on the shafty30 that provides the pivots for the respective gates 11-12.

The reservoir 21 has an exhaust safety valve 31 connectedtherewith. The successive downv ward movement of the plungers in the air pumps will, as previously stated, force compressed into the reservoir 21 which from there will be delivered through the pipes 22 and 26 to operate the semaphore arm and the gates. A surplus amount of the air will be exhausted through the safety valve in the cylinder, and the compressed air will be exhausted through the bleed ports in the cylinders 26 and the pump cylinders 16,

after the train has passed the crossing. The gates are returned to unobstructing position through the medium of the weights associated therewith, but such return is slowly accomplished as the bleed ports are com paratively small and some time is required before the air is fully exhausted from the cylinders. This is really an advantage, inas much as the pumps or air compressors are located, a considerable distance away from the crossing, and the train fully passes over the crossing before the gates are brought to non-obstructing position.

the said weights on the gates, and sema- .phores affecting and ejecting the air from the reservoir and from the pistons. lVhile,

the device, as above described, is devised for a one-way track, in which a train travels in only one direction, it will be apparent that by slight alterations the arrangement maybe so changed as to permit the gates and semaphores being operated from trains passing in opposite directions, either upon one or a plurality of tracks.

Having thus described the invention, what is claimed as new, is

In combination with the rails of a track, a crossing, pivotally supported weight in iiuenced gates at the crossing and a signal carrying shaft to one side of the gates, of pneumatic means for operating the gates to an obstructing position and for revolving the shaft to bring the signal thereon to signaling position, including air compressing pumps disposed one forward of the other between the rails of the track, to the sides of the crossing, each of said pumps includ ing a cylinder having an air bleed port, a plunger in the cylinder spring influenced toward the top of the cylinder, a stem for the plunger passing through the cylinder and a rounded head for the stem, and the said rounded heads being in the path of,

engagement with a contact element on a train approaching the crossing, a reservoir having a safety valve and having a pipe connection with the respective cylinders, pipes leading from the reservoir, a cylinder with which one'of said pipes communicates, a piston therein, a stem for the piston passing through the cylinder,-a slotted rod connected with the shaft of the signal arm freely receiving the end of the stem in the slot thereof, cylinders having bleed ports with which the second pipe communicates, pistons therein, rods therefor projecting through thecylinders, links pivotally connected to the rods, and a crank on the pivot of the respective gates to which, said links are pivoted.

In testimony whereof I afiiX my signture.

"ROSS DE SIMONE. 

